Harvey Tool 40447-C6 Ball End Mill 3/64 in 2 Flute Carbide

Product Description

The HARVEY TOOL 40447-C6 is a solid carbide ball end mill designed for high-precision milling of medium alloy steels, hard materials, stainless steel, and cast iron. With a 3/64 inch (0.0470 inch decimal) cutting diameter and a 35-degree helix angle, this single-end mill delivers both roughing and finishing capability in one tool. The tapered reach neck geometry makes it well suited for deep-cavity mold work where clearance is critical. An AlTiN Nano PVD coating provides thermal resistance and wear protection during aggressive cuts in ferrous and hard workpiece materials. This tool is handled by machinists and toolmakers working on CNC machining centers and milling machines.

This end mill belongs to the HARVEY TOOL High Helix End Mills for Medium Alloy Steels series, specifically the Ball Tapered Reach Mold Cutter line. It is intended for use on steel and hard material (ISO P and H classifications) as primary workpiece materials, with stainless steel and cast iron (ISO M and K) as secondary applications. The tapered reach neck and stub-length flute configuration make it a practical choice for finishing detailed contours and pockets in injection molds, die components, and similar precision machined parts where tool runout and deflection must be minimized.

Key Features

• 3/64 inch (0.0470 inch decimal, 1.20 mm) ball nose cutting diameter with a 0.0235 inch nose radius
• AlTiN Nano PVD coating for extended tool life in steel, hard alloys, stainless steel, and cast iron
• 35-degree helix angle optimized for medium alloy steels and hard materials
• Tapered reach neck with 0.827 inch neck length and 0.865 inch reach length for deep-cavity mold and die work
• 2-flute, right-hand cut, right-hand spiral geometry with straight cylindrical 1/4 inch shank
• Solid carbide construction for rigidity and dimensional stability at small diameters
• Single-end design rated for both roughing and finishing operations

Compatibility

Designed for use in CNC machining centers and manual mills with a standard 1/4 inch collet or tool holder. Primary workpiece materials are steel and hard material (ISO P and H); secondary materials include stainless steel and cast iron (ISO M and K). Part of the HARVEY TOOL High Helix End Mills for Medium Alloy Steels - Ball - Tapered Reach (Mold Cutters) series.

Installation Notes

Installation is performed by a qualified machinist or toolmaker. Seat the 1/4 inch straight shank fully into a precision collet or end mill holder and torque to the tool holder manufacturer specification before use. Verify runout at the cutting diameter before starting the program, as runout errors are amplified at small diameters. Follow all machine-specific lockout and tool-change procedures when loading or unloading the tool.